text: # -*- coding: utf-8 -*-
  from __future__ import print_function, division, absolute_import
  
  import unittest
  from flypy import jit
  
  class TestPrimitives(unittest.TestCase):
  
      def test_is_none(self):
          @jit
          def f(x):
              return x is None
  
          self.assertEqual(f(None), True)
          self.assertEqual(f(10), False)
  
  
  if __name__ == '__main__':
      unittest.main()